Analysis on Production Efficiency of Small-scale Pig Breeding in China Under the Background of Rural Revitalization — Based on Three-stage DEA Model

【Objective】 Under the background of rural revitalization, this paper analyzed the efficiency of smallscale pig breeding in different areas in order to provide policy recommendations for the development of small-scale pig breeding industry in China. 【Method】 Based on the input, output and environmental data of small-scale pig production in 25 provinces (municipalities/autonomous regions) of China in 2016, the production efficiency of each region was estimated by three-stage DEA model.【Result】 The results showed that the production efficiency of small-scale pig breeding in China was underestimated before environmental factors and statistical noise were eliminated. The regional economic development level has no obvious impact on the production efficiency of small-scale pig breeding. The increase of regional openness and government’s support for agriculture can significantly reduce the investment redundancy of small-scale pig breeding. 【Conclusion】 The improvement of the development environment of pig industry is conducive to improving the production efficiency of small-scale pig breeding. The government’s support can effectively improve the production efficiency of small-scale pigs. The pertinence of agricultural support should be strengthened in all regions.